The Daily bulletin. [volume] (Honolulu [Hawaii]) 1882-1895, 1887-06-23
TAe gatlg 9nllGtin,
THURSDAY. JUNE 30, 1887.
POPULAR SCIENCE.

cal 5 ciety, not merely useless, but
positively dangerous.
"Dermatine' is the new substance
Of soles of boots aud shoes. 1t is
impervious 10 wet and has stronger
resistance to wear than leather. 1t
stitches very we'll, and hence is
superior to india-rubber. and gives
better grip in walking on wet sur
faces.
In the French Academy of Sciences
paper was read the other day on
an absolute unity of time. An
electrical apparatus was described,
which gives results more accurately
than those of the best constructed
astronomical clock. 1t has also the
advantage Of indicating. recording
and automatically correcting its own
variations of velocity.
Nj. Lessenne claims that q certain
sign of death is the permanent gap
ing OF q wound made in the skin by
puncturing it with a needle. If the
person be living, blood will usually
follow the withdraw of the needle,
but whether it does or not the wound
will close at once. The puncture
made in the skin of dead person
will remain open, rs if made in
leather.
Carbonic acid, produced by the
action of vinegar or marble, is sup
posed to have been used as an
anns,hetic by the ancient Egyptians
and Greeks. M. Oh. Canaan re-
ports to the Paris Biological Society
that an9sthesia induced by carbonic
aci;l is very complete, may last a
long time, and the gas, OF course,
being mixed with air, is without
danger.
The reasons of "the sun putting
out fire" is thus explained: At
the time of day when the sun
shines into a room the fire is often
allowed to get dull, and the suns
rays warm and rarity the air in the
room as much as the fire warns the
air passing over it up the chimney.
Hence, the draught ceases and the
fire goes out. TO remedy the in
convenience open the door or the
widow to let the warm air out and
cod in.
The Electrical Rerie,o gives the
following as an etching liquid for
steel: Mix one ounce sulphate of
copper, one-half ounce alum and
one-half teaspoonful salt reduced to
powder, with one gill of vinegar and
twenty drops of nitric acid. This
liquid may be used for either eating
deeply into the metal or for impart-
ing beautiful, frosted appearance
to the surface, according to the time
it is allowed to act. Cover the parts
you wish to protect from its infu.
ence with beeswax or tallow.
A possible cause of the earth
quakes in Europe has been suggested
to the French Academy of Sciences
by Nj. A. Blavier, WHO associates
the great disturbances OF 1855, 1884
and 1887 with abormal accumula-
tions Of ice about the North Pole.
He supposes such accumulations to
have caused q DETECTION of the Gulf
Stream away from Europe, produc-
ing great climatic changes and a
slight disturbance of equilibrium in
the sea-bottom, followed Ivy posi-
bic local fracture along tie line of
least resistance. Evidence of the
in, rush of cold oceanic waters is
furnished by the disappearance of
sardinos from the west coast of
Europe during the years in qpes-
ton.
An English scientific journal
enumerates the following as among
the inventions which are specially
needed at the present time: Maca-
roni machinery, good red leadpen-
ellis, type-writers that will work on
account-books and record-books, in
delible stamp-cancelling ink, u prac-
ticle car-starter, good railway car
ventilator, better horse-shoes, loco
motive headlights, an instrument for
measuring the velocity of wind cur
rents, apparatus for measuring the
depth of the sea without sounding
by line, piano-lid huge which shall
he flush on the outside, good fluid
India ink for draughtsmen, good
metallic railway tie, an effective cut
off for locomotives, a method of
alloying copper and iron, and q
molding material for iron and brass
casting, capable of giving a mold
that Can be used over and over
again.
in the bulletin of the Tennessee
Board of Health attention is called
to condition of the egg, little
known, which considerably impairs
its sanitary value as an article of
food. Soon after it became the
practice 10 transport eggs in large
quantities and to long distances by
railway trains, it was found on their
arrival that adhesions had taken
place between the membranes of the
yelk and those of the shell, so that
the yelk could not be turned out Of
the shell unbroken. On examina-
ton by experienced Psychologists this
was found to be the result of true
Inflammation; the material of the
adhesion was found to be precisely